<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card >
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="9">
          <el-input placeholder="请输入内容" clearable
          @clear="getUserList"
          v-model="queryInfo.query"
          class="input-with-select">
            <el-button slot="append" @click="getUserList" icon="el-icon-search"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区 -->
      <el-table :data = "userlist" border stripe>
        <el-table-column type = "index" ></el-table-column>
        <el-table-column label = "姓名" prop="username"></el-table-column>
        <el-table-column label = "邮箱" prop="email"></el-table-column>
        <el-table-column label = "电话" prop="mobile"></el-table-column>
        <el-table-column label = "角色" prop="role_name"></el-table-column>
        <el-table-column label = "状态">
          <template slot-scope="it">
            <el-switch v-model="it.row.mg_state" @change="userStateChanged(it.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label = "操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.id)" size="mini"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" @click="removeUserById(scope.row.id)" size="mini"></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close= "addDialogClosed">
      <!-- 内容主体区 -->
      <el-form :model="addForm" :rules="addFormRules"
      ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
         <el-form-item label="密码" prop="password">
          <el-input type="password" v-model="addForm.password"></el-input>
        </el-form-item>
         <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
         <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      @close= "editDialogClosed"
      width="50%">
      <!-- 修改用户内容主体区 -->
      <el-form :model="editFrom" :rules="editFromRules"
        ref="editFromRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="editFrom.username" disabled></el-input>
        </el-form-item>
         <el-form-item label="邮箱" prop="email">
          <el-input v-model="editFrom.email"></el-input>
        </el-form-item>
         <el-form-item label="手机" prop="mobile">
          <el-input v-model="editFrom.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close = "setRoleDialogClosed"
      >
      <div>
        <p>当前用户：{{userInfo.username}}</p>
        <p>当前角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
            <el-select v-model="selectedRoleId" placeholder="请选择">
              <el-option
                v-for="item in rolesList"
                :key="item.id"
                :label="item.roleName"
                :value="item.id">
              </el-option>
            </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo()">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  name: 'Users',
  data () {
    // 验证邮箱的规则
    let checkEmail = (rule, value, callback) => {
      const regEmail = /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
      if (regEmail.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法的邮箱'))
    }
    let checkMobile = (rule, value, callback) => {
      const regMobile = /^(?:(?:\+|00)86)?1(?:(?:3[\d])|(?:4[5-79])|(?:5[0-35-9])|(?:6[5-7])|(?:7[0-8])|(?:8[\d])|(?:9[189]))\d{8}$/
      if (regMobile.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法的手机号'))
    }
    return {
      // 定义获取用户列表的参数
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        pagesize: 2
      },
      userlist: [],
      total: 0,
      // 控制用户对话框的显示
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加用户的表单验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '用户名的长度在3到10个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '密码的长度在6到15个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制用户修改框的显示和隐藏
      editDialogVisible: false,
      // 查询到的用户信息
      editFrom: {},
      // 修改用户信息的规则
      editFromRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示和隐藏
      setRoleDialogVisible: false,
      userInfo: {},
      // 全部角色列表
      rolesList: [],
      selectedRoleId: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error(res?.meta?.msg || '获取菜单列表失败！')
      this.userlist = res?.data?.users || []
      this.total = res?.data?.total
    },
    // 监听 pagesize 改变的事件 -需要显示多少条
    handleSizeChange (newSize) {
      console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 页码值 改变的事件 -需要显示第几页
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听 switch 开关状态
    async userStateChanged (userInfo) {
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error(res?.meta?.msg || '更新用户状态失败！')
      }
      this.$message.success('更新用户状态成功!')
    },
    // 监听添加用户对话框的关闭
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 确定按钮添加新用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return false
        // 发起请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          return this.$message.error(res?.meta?.msg || '创建用户失败！')
        }
        this.$message.success('创建用户成功!')
        this.addDialogVisible = false
        // 重新刷新用户的列表
        this.getUserList()
      })
    },
    // 修改用户
    async showEditDialog (id) {
      // 发起请求
      const { data: res } = await this.$http.get(`users/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error(res?.meta?.msg || '创建用户失败！')
      }
      this.editFrom = res.data
      this.editDialogVisible = true
    },
    // 关闭修改用户框
    editDialogClosed () {
      this.$refs.editFromRef.resetFields()
    },
    // 发起修改编辑用户信息的数据请求
    editUserInfo () {
      this.$refs.editFromRef.validate(async valid => {
        if (!valid) return false
        // 发起请求
        const { data: res } = await this.$http.put('users/' + this.editFrom.id, {
          email: this.editFrom.email,
          mobile: this.editFrom.mobile
        })
        if (res.meta.status !== 200) {
          return this.$message.error(res?.meta?.msg || '更新用户信息失败！')
        }
        this.$message.success('更新用户信息成功!')
        this.editDialogVisible = false
        // 重新刷新用户的列表
        this.getUserList()
      })
    },
    // 根据用户id删除用户信息
    async removeUserById (id) {
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户确认删除，则返回值为字符串 confirm
      // 如果用户取消删除，则返回值为字符串 cancle
      if (confirmResult === 'confirm') {
        const { data: res } = await this.$http.delete('users/' + id)
        if (res.meta.status !== 200) {
          return this.$message.error(res?.meta?.msg || '删除用户信息失败！')
        }
        // 重新刷新用户的列表
        this.getUserList()
        this.$message.success('删除成功!');
      }
    },
    async setRole (userInfo) {
      this.userInfo = userInfo
      // 获取全部的角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error(res?.meta?.msg || '获取全部的角色列表失败！')
      }
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    // 点击按钮，分配角色
    async saveRoleInfo () {
      if (!this.selectedRoleId) return this.$message.error('请选择要分配的角色！')
      // 获取全部的角色列表
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
      if (res.meta.status !== 200) {
        return this.$message.error(res?.meta?.msg || '更新用户角色失败！')
      }
      this.$message.success('更新用户角色成功！')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>
<style lang="less" scoped>

</style>
